CN209148689U - A kind of multifunctional water cement-based material expansion rate analyzer - Google Patents

Abstract

The utility model discloses a kind of multifunctional water cement-based material expansion rate analyzers, including bracket, the bracket is in crescent, the bracket is equipped with groove at two close end respectively, the support rod that can be screwed out is equipped in the groove, the both ends of the bracket further respectively have the first contact and the second contact, and first contact and the second contact level are oppositely arranged, first contact is contacted with the measuring head of amesdial, and second contact adjustably adjusts.This analyzer is stood to be measured on station or ground, is avoided and is directly placed on cement-based material test specimen to be measured, analyzer measurement accuracy and test specimen expansion influence each other, whole device measurement it is more firm；Device needs pouring molding concrete/cement measurement method on device, that is, surveying is to walk, very portable instead of traditional.

Description

A kind of multifunctional water cement-based material expansion rate analyzer

Technical field

The utility model belongs to cement and expanded rate measuring device field, especially a kind of multifunctional water cement-based material expansion rate Analyzer.

Background technique

Cement is a kind of powdery hydraulicity inorganic coagulation material, forms slurry after adding water and stirring, can be hard in empty gas and water Change, and the materials such as sand, stone are cemented together securely.The concrete or mortar being made into based on cement, since it is anti- Compressive Strength is high, and endurance quality is good, has been widely used in building in each field.However, cement-based material, especially high grade are high The cement-based material of intensity, have the shortcomings that one it is fatal be exactly be easy it is dry shrink, lead to material cracks.When cement consumption is very big When, material cracks can seriously affect the service life of building.Therefore, swelling agent is added when preparing cement-based material, makes its production Raw microdilatancy can effectively reduce its shrinkage cracking with compensating material autogenous shrinkage.

In cement-based material development process, need to measure expansion and shrinking percentage, GB23439-2017 " concrete expansion Agent " in define it is a kind of measurement mix the limited expansion rate of swelling agent concrete and the equipment of contraction and test method, this contact The method of test has the disadvantage that (1) in test process, needs multiple school zero, repeatedly test specimen is put in lift, cumbersome every time；(2) this Detection method is high to surface of test piece cleannes, flatness requirement, otherwise will have a direct impact on data accuracy；(3) in test process It needs to prepare shaping test piece in equipment, take time and effort, need more people's cooperations；(4) equipment instrument is big, and quality weight is not easy to carry And carrying；(5) this equipment is only applicable to the test of concrete limited expansion rate test specimen.

In the prior art, for example, the patent of Patent No. " 200920086075.0 " " concrete expansion shrink measurement dress Set ", concrete sample is clamped using forward and backward clamp arm, the difference before and after curing time is measured after common maintenance a period of time, in turn Calculate expansion rate.Since concrete sample expands in the preparation, variation is very small, and this forward and backward clamp arm of device is since there are bullets There is adverse effect to the natural expansion of concrete sample, simultaneously as concrete sample different zones is swollen in spring clamping action Swollen degree is different, and to the forward and backward clamp arm of device there are torsion, this torsion also will affect the first, second measurement table distribution and mixed Stress condition between solidifying soil test specimen, influences measurement accuracy.

Summary of the invention

Cement-based material test specimen is similar with concrete sample, and in order to guarantee higher measurement accuracy, avoiding device is to cement The natural expansion effects of sill test specimen exclude influence of the cement-based material test specimen different parts degrees of expansion difference to precision, The utility model provides a kind of multifunctional water cement-based material expansion rate analyzer, and specific technical solution is as follows.

A kind of multifunctional water cement-based material expansion rate analyzer, including bracket, the bracket are in crescent, and the bracket leans on It is respectively equipped with groove at two close end, is equipped with the support rod that can be screwed out in the groove, the both ends of the bracket further respectively have First contact and the second contact, first contact and the second contact level are oppositely arranged, first contact and amesdial Measuring head contact, second contact adjustably adjust.

For example, the distance between the first contact and the second contact of said determination instrument can be specifically set as 440mm, thousand points The measuring head adjustable extent of table can be specifically set as 0~100mm, and the scalable range of the second contact can be specifically configured to 0~ 80mm.By adjusting in the manner described above, the measurement range of analyzer is about 260~440mm, can measure various sizes of water Cement-based material test specimen, longitudinal limiter needed for needing when measurement to consider fixed cement-based material test specimen and ailhead are total to about 55mm's Thickness.Analyzer when in use, screws out support rod, falls on naturally with making riding on smooth ground or station, bracket Central region and ground face contact；Measuring head is adjusted, the first contact and the second contact is made to withstand on cement-based material examination to be measured respectively On the ailhead of two opposite flanks of part, allow the first contact and the second contact to cement-based material test specimen two ends ailhead to be measured without Any vertical active force, only the top power of horizontal direction；Allow cement-based material test specimen two ends to be measured ailhead and the first contact and Second contact comes into full contact with, and reads for the first time from amesdial this moment, keeps the state of test specimen and analyzer motionless, then pulls Amesdial gauge outfit is repeated several times test and reads data, guarantees the accuracy of single testing length.After certain time conserves, It is re-measured according to aforesaid operations, record amesdial reading, the latter and the former difference indicate cement-based material test specimen to be measured Degrees of expansion, when being positive value, cement-based material test specimen to be measured be in swelling state, when for negative value, cement matrix to be measured Material test specimen is in contraction state.The expansion rate of cement-based material test specimen to be measured is then calculated by formula again.Pass through different curing periods Cement-based material piece lengths to be measured test, can calculate cement-based material test specimen to be measured expansion and shrink situation, from And preferably instruct the expansive agent dosage of practical application.On the basis of this analyzer is using third-party level ground or station Be measured, influence to measurement accuracy when avoiding cement-based material test specimen to be measured expansion, compared to it is traditional in the device The mode of direct joints cement molding, measurement, the device do not need cumbersome step, that is, surveying is to walk, easy to carry, operation letter It is single, save manpower.

Preferably, the central region of the bracket be equipped with level meter, the support rod be it is telescopic, on the support rod Equipped with locked assembly.For example, the telescopic range of support rod is 50~90mm, with flexible, two support rods of support rod Rotation angle also to can be specifically set be 10~90 °, adjust support rod and simultaneously fixed with locked assembly, inclining for bracket can be controlled Oblique degree, and then the expansion rate of cement-based material test specimen different location to be measured can be measured, convenient for improving measurement accuracy；Work as ground Or station it is uneven when, entire analyzer can be kept more firm with the length of separately adjustable two support rods.Locked assembly can To be analogous to umbrella rib structure, a round to be made a call on female bar, and an elastic bumps are set on sub bar, elastic bumps can be caught in hole, Realize that sub bar stretches on female bar.

It is highly preferred that the support rod end is equipped with the first non-slip mat.

It is further preferred that the central region of the bracket is enclosed with second non-slip mat of circle.Second non-slip mat and ground Contact anti-sliding stop.

Preferably, the bracket is equipped with several hollow out frames.Hollow out frame can further decrease the weight of analyzer, make it It is easy to carry.

It is highly preferred that the symmetry axis of the bracket is equipped with shaft.By transportation of being more convenient for after bracket doubling.

A kind of multifunctional water cement-based material expansion rate analyzer provided by the utility model, is advantageous in that:

1, this analyzer is stood is measured on station or ground, avoids and is directly placed at cement-based material examination to be measured On part, analyzer measurement accuracy and test specimen expansion influence each other, whole device measurement it is more firm；

2, device needs pouring molding concrete/cement measurement method on device instead of traditional, that is, surveys and be It walks, it is very portable.

Detailed description of the invention

Fig. 1 is a kind of bottom view for multifunctional water cement-based material expansion rate analyzer that embodiment 1 provides；

Fig. 2 is a kind of schematic diagram of the multifunctional water cement-based material expansion rate analyzer that provides of embodiment 1 when in use, figure Middle rectangle is cement-based material test specimen to be measured；

Fig. 3 is a kind of bottom view for multifunctional water cement-based material expansion rate analyzer that embodiment 2 provides；

Fig. 4 is that a kind of support rod partial structurtes for multifunctional water cement-based material expansion rate analyzer that embodiment 2 provides are shown It is intended to；

Figure label is as follows:

1, bracket；2, groove；3, support rod；4, the first contact；5, the second contact；6, amesdial；7, measuring head；8, horizontal Instrument；9, hole；10, elastic bumps；11, the first non-slip mat；12, the second non-slip mat；13, hollow out frame.

Specific embodiment

Clear, complete description is carried out below with reference to technical solution of the attached drawing to embodiment each in the utility model, is shown So, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.It is practical based on this Novel embodiment, those of ordinary skill in the art's obtained all other reality without making creative work Example is applied, the range that the utility model is protected is belonged to.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside", "top" is that orientation based on the figure or position are closed System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, Term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.It should be pointed out that all attached drawings are illustrative expression.For For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.

Embodiment 1

As shown in Figure 1, 2, a kind of multifunctional water cement-based material expansion rate analyzer, including bracket 1, the bracket 1 are in the moon Thread form, the bracket 1 are equipped with groove 2 respectively at two close end, are equipped with the support rod 3 that can be screwed out, the branch in the groove 2 The both ends of frame 1 further respectively have the first contact 4 and the second contact 5, and first contact 4 and 5 level of the second contact are oppositely arranged, First contact 4 is contacted with the measuring head 7 of amesdial 6, second contact 5 scalable tune in the way of screw thread rotation Section.

Distance is 440mm between the first contact and the second contact of the analyzer of the present embodiment, and the length of support rod is 80mm, the measuring head adjustable extent of amesdial are 0~100mm, and the scalable range of the second contact is 0~80mm.In use, will Second contact is adjusted to 80mm, and the measurement range of analyzer is about 260~360mm at this time.It chooses having a size of 100mm × 100mm The cement-based material test specimen to be measured of × 300mm, and longitudinal limiter is added and ailhead is total to about 55mm, total 355mm.

The support rod of analyzer is screwed out, is fallen on naturally with making riding on smooth ground or station, bracket Central region and ground face contact；Measuring head is adjusted, the first contact and the second contact is made to withstand on cement-based material test specimen to be measured respectively Two opposite flanks ailhead on, allow the first contact and the second contact to cement-based material test specimen two ends ailhead to be measured without appointing What vertical active force, only the top power of horizontal direction, allows the ailhead and the first contact and the of cement-based material test specimen two ends to be measured Two contacts come into full contact with, and read for the first time from amesdial this moment, keep the state of test specimen and analyzer motionless, then pull thousand Divide table gauge outfit, test is repeated several times and reads data, guarantees the accuracy of single testing length.After certain time conserves, press It is re-measured according to aforesaid operations, record amesdial reading, the latter and the former difference indicate cement-based material test specimen to be measured Degrees of expansion, when being positive value, cement-based material test specimen to be measured is in swelling state, when being negative value, cement-based material to be measured Test specimen is in contraction state.The expansion rate of cement-based material test specimen to be measured is then calculated by formula again.Pass through different curing periods Cement-based material piece lengths test to be measured can calculate the expansion of cement-based material test specimen to be measured and shrink situation, thus Preferably instruct the expansive agent dosage of practical application.

If ground or operating platform face have uneven or hollow phenomenon or cement-based material test specimen to be measured at During type or when demoulding, due to gimmick, cement-based material test specimen touch operation flat surface to be measured is caused to have out-of-flatness Situation can place the smooth PVC tablecloth of a certain thickness before testing on platform, carry out according still further to aforesaid operations, can also To guarantee concrete limitation test specimen expansion and shrink the accuracy of situation test.

This analyzer avoids cement base to be measured using being measured on the basis of third-party level ground or station Influence when material test specimen expands to measurement accuracy, compared to the side of traditional joints cement direct in the device molding, measurement Formula, the device do not need cumbersome step, that is, surveying is to walk, easy to carry, easy to operate, save manpower.

Embodiment 2

As shown in Figure 3,4, multifunctional water cement-based material expansion rate analyzer provided in this embodiment, in the base of embodiment 1 Make following improvement on plinth:

(1) central region of the bracket 1 is equipped with level meter 8, and the support rod 3 is telescopic, and telescopic extensions are 50~90mm, the support rod 3 are equipped with locked assembly；The locked assembly includes on a round 9 and sub bar on female bar Elastic bumps 10；With stretching for the support rod 3, the support rod 3 is also required to rotation to respective angles, and angular range is set It is set to 10~90 °.

(2) 3 end of support rod is equipped with the first non-slip mat 11, and the central region of the bracket 1 is enclosed with a circle second Non-slip mat 12, the bracket 1 are equipped with several hollow out frames 13.

The analyzer of the present embodiment, it is higher to use measurement accuracy, lighter, storage easy to carry, and can use In the cement-based material test specimen to be measured of measurement different height.

The implementation of the utility model is described in detail in above embodiments, and still, the utility model is not limited to above-mentioned implementation Detail in mode.It, can be to the utility model in claims and range of the technology design of the utility model Technical solution progress is a variety of simply to be remodeled and changed, these simple variants belong to the protection scope of the utility model.

Claims (6)

1. a kind of multifunctional water cement-based material expansion rate analyzer, which is characterized in that including bracket, the bracket is in crescent, The bracket is equipped with groove respectively at two close end, is equipped with the support rod that can be screwed out, the both ends of the bracket in the groove The first contact and the second contact are further respectively had, first contact and the second contact level are oppositely arranged, first contact It is contacted with the measuring head of amesdial, second contact adjustably adjusts.

2. multifunctional water cement-based material expansion rate analyzer according to claim 1, which is characterized in that in the bracket Portion region be equipped with level meter, the support rod be it is telescopic, the support rod be equipped with locked assembly.

3. multifunctional water cement-based material expansion rate analyzer according to claim 1 or 2, which is characterized in that the support Bar end is equipped with the first non-slip mat.

4. multifunctional water cement-based material expansion rate analyzer according to claim 3, which is characterized in that in the bracket Portion region is enclosed with second non-slip mat of circle.

5. multifunctional water cement-based material expansion rate analyzer according to claim 1 or 2, which is characterized in that the bracket It is equipped with several hollow out frames.

6. multifunctional water cement-based material expansion rate analyzer according to claim 5, which is characterized in that pair of the bracket Axis is claimed to be equipped with shaft.